rs762950368

Positions:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2BP4BP6BS2

The NM_001271.4(CHD2):c.4165A>C(p.Lys1389Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000693 in 1,586,574 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K1389E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000056 ( 0 hom. )

Consequence

CHD2
NM_001271.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 4.43

Variant links:

Genes affected

CHD2 (HGNC:1917): (chromodomain helicase DNA binding protein 2) The CHD family of proteins is characterized by the presence of chromo (chromatin organization modifier) domains and SNF2-related helicase/ATPase domains. CHD genes alter gene expression possibly by modification of chromatin structure thus altering access of the transcriptional apparatus to its chromosomal DNA template. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

CHD2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CHD2. . Gene score misZ 5.2052 (greater than the threshold 3.09). Trascript score misZ 6.0204 (greater than threshold 3.09). GenCC has associacion of gene with developmental and epileptic encephalopathy 94, complex neurodevelopmental disorder, myoclonic-astatic epilepsy, Lennox-Gastaut syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.2696948).

BP6

Variant 15-93002204-A-C is Benign according to our data. Variant chr15-93002204-A-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 474390.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1}.

BS2

High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHD2	NM_001271.4 linkuse as main transcript	c.4165A>C	p.Lys1389Gln	missense_variant	33/39	ENST00000394196.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHD2	ENST00000394196.9 linkuse as main transcript	c.4165A>C	p.Lys1389Gln	missense_variant	33/39	5	NM_001271.4	P1	O14647-1

Frequencies

GnomAD3 genomes

AF:

0.0000199

AC:

AN:

151098

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000199

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000557

AC:

AN:

1435476

Hom.:

Cov.:

AF XY:

0.00000840

AC XY:

AN XY:

713886

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.07e-7

Gnomad4 OTH exome

AF:

0.000118

GnomAD4 genome

AF:

0.0000199

AC:

AN:

151098

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73762

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000199

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ExAC

AF:

0.00000825

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 12, 2019

The p.K1389Q variant (also known as c.4165A>C), located in coding exon 32 of the CHD2 gene, results from an A to C substitution at nucleotide position 4165. The lysine at codon 1389 is replaced by glutamine, an amino acid with some similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Developmental and epileptic encephalopathy 94

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 06, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.42

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.14

.;T

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.95

D;D

M_CAP

Benign

0.038

MetaRNN

Benign

0.27

T;T

MetaSVM

Benign

-0.81

MutationAssessor

Benign

1.9

L;L

MutationTaster

Benign

0.99

D;D

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-1.3

.;N

REVEL

Benign

0.066

Sift

Benign

0.097

.;T

Sift4G

Benign

0.36

T;T

Polyphen

0.94

P;P

Vest4

0.39

MutPred

0.26

Loss of methylation at K1389 (P = 0.0129);Loss of methylation at K1389 (P = 0.0129);

MVP

0.54

MPC

0.42

ClinPred

0.54

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.14

gMVP

0.30

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over